4531491 has 16 divisors (see below), whose sum is σ = 6762400. Its totient is φ = 2998944.

The previous prime is 4531463. The next prime is 4531517. The reversal of 4531491 is 1941354.

It is not a de Polignac number, because 4531491 - 2¹⁸ = 4269347 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4531441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3705 + ... + 4773.

It is an arithmetic number, because the mean of its divisors is an integer number (422650).

Almost surely, 2^4531491 is an apocalyptic number.

4531491 is a deficient number, since it is larger than the sum of its proper divisors (2230909).

4531491 is a wasteful number, since it uses less digits than its factorization.

4531491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235 (or 1229 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 4531491 is about 2128.7299030173. The cubic root of 4531491 is about 165.4805823581.

The spelling of 4531491 in words is "four million, five hundred thirty-one thousand, four hundred ninety-one".